зеркало из https://github.com/mozilla/gecko-dev.git
37 строки
982 B
C++
37 строки
982 B
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* This target fuzzes NSS mpi against openssl bignum.
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* It therefore requires openssl to be installed.
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*/
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#include "mpi_helper.h"
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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// We require at least size 3 to get two integers from Data.
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if (size < 3) {
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return 0;
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}
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INIT_FOUR_NUMBERS
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// We can't divide by 0.
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if (mp_cmp_z(&b) == 0) {
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CLEANUP_AND_RETURN
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}
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// Compare with OpenSSL mod
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assert(mp_mod(&a, &b, &c) == MP_OKAY);
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(void)BN_mod(C, A, B, ctx);
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check_equal(C, &c, max_size);
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// Check a mod b = a - floor(a / b) * b
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assert(mp_div(&a, &b, &r, nullptr) == MP_OKAY);
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assert(mp_mul(&r, &b, &r) == MP_OKAY);
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assert(mp_sub(&a, &r, &r) == MP_OKAY);
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assert(mp_cmp(&c, &r) == 0);
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CLEANUP_AND_RETURN
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}
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